Adding upstream version 7.0.6-dfsg.upstream/7.0.6-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 64 insertions, 0 deletions

diff --git a/src/VBox/Devices/BiosCommonCode/__U8RS.asm b/src/VBox/Devices/BiosCommonCode/__U8RS.asm
new file mode 100644
index 00000000..b213fd99
--- /dev/null
+++ b/src/VBox/Devices/BiosCommonCode/__U8RS.asm
@@ -0,0 +1,64 @@
+; $Id: __U8RS.asm $
+;; @file
+; Compiler support routines.
+;
+
+;
+; Copyright (C) 2012-2022 Oracle and/or its affiliates.
+;
+; This file is part of VirtualBox base platform packages, as
+; available from https://www.virtualbox.org.
+;
+; This program is free software; you can redistribute it and/or
+; modify it under the terms of the GNU General Public License
+; as published by the Free Software Foundation, in version 3 of the
+; License.
+;
+; This program is distributed in the hope that it will be useful, but
+; WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+; General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program; if not, see <https://www.gnu.org/licenses>.
+;
+; SPDX-License-Identifier: GPL-3.0-only
+;
+
+
+;*******************************************************************************
+;*  Exported Symbols                                                           *
+;*******************************************************************************
+public          __U8RS
+
+
+                .8086
+
+_TEXT           segment public 'CODE' use16
+                assume cs:_TEXT
+
+;;
+; 64-bit unsigned right shift.
+;
+; @param    ax:bx:cx:dx Value. (AX is the most significant, DX the least)
+; @param    si          Shift count.
+; @returns  ax:bx:cx:dx Shifted value.
+; si is zeroed
+;
+__U8RS:
+
+                test    si, si
+                jz      u8rs_quit
+u8rs_rot:
+                shr     ax, 1
+                rcr     bx, 1
+                rcr     cx, 1
+                rcr     dx, 1
+                dec     si
+                jnz     u8rs_rot
+u8rs_quit:
+                ret
+
+_TEXT           ends
+                end
+